topdaysinmonth calendar
Return value
number of days in a month or -1 in case of error
Parameters
month
year
in
optional
default: from "time" common variable of cm_4cal
Examples
IDL> ndays = daysinmonth(2, 2000)
Version history
Version
$Id: daysinmonth.pro 137 2006-07-12 09:33:44Z smasson $
History
Sebastien Masson (smasson@lodyc.jussieu.fr)
2/7/98
update/review/english/new commons: June 2005 Sebastien Masson.
Other attributes
Uses routines
cm_4cal, updatenew